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core-js vs GOV.UK Template

Based on 1582 and 10 real audits

View core-js details | View GOV.UK Template details
Metriccore-jsGOV.UK TemplateWinner
Performance3680GOV.UK Template
Accessibility8899GOV.UK Template
Best Practices84100GOV.UK Template
SEO9198GOV.UK Template
Security6581GOV.UK Template
TTFB374ms207msGOV.UK Template
Composite7286GOV.UK Template
Performance
core-js
36
GOV.UK Template
80
Accessibility
core-js
88
GOV.UK Template
99
Security
core-js
65
GOV.UK Template
81
SEO
core-js
91
GOV.UK Template
98
Composite
core-js
72
GOV.UK Template
86

GOV.UK Template outperforms core-js in 7 of 7 categories, with a stronger composite score (86 vs 72). core-js leads in no categories.

When to choose core-js

core-js doesn't clearly lead GOV.UK Template in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.

When to choose GOV.UK Template

Choose GOV.UK Template when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 1582 audited core-js sites and 10 audited GOV.UK Template sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

FAQ

Which is faster, core-js or GOV.UK Template?
Based on real BeaverCheck audits, GOV.UK Template sites score higher on Lighthouse performance (80 vs 36 on average).
Which has better security, core-js or GOV.UK Template?
GOV.UK Template sites score higher on security analysis (81 vs 65 on average).
Which has better accessibility, core-js or GOV.UK Template?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor GOV.UK Template (99 vs 88). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, core-js or GOV.UK Template?
GOV.UK Template sites score higher on Lighthouse SEO signals (98 vs 91 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), core-js or GOV.UK Template?
GOV.UK Template sites show lower Time to First Byte (207 ms vs 374 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose core-js or GOV.UK Template for my website?
Both platforms have trade-offs. GOV.UK Template scores higher on overall composite score while core-js may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
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